EPJ

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EPJ C - Particles and Fields
Particles and Fields
Eur. Phys. J. C 7, 631-642
DOI 10.1007/s100529801038

Vector boson decays of the Higgs boson

J.C. Romão1 - S. Andringa2

1 Departamento de Física, Instituto Superior Técnico A. Rovisco Pais, P-1096 Lisboa Codex, Portugal
2 LIP, Av. Elias Garcia 14, 1e, P-1000 Lisbon, Portugal

Received: 31 July 1998 / Revised version: 23 September 1998 / Published online: 6 November 1998

Abstract
We derive the width of the Higgs boson into vector bosons. General formulas are derived both for the on-shell decay $H \rightarrow VV$ as well for the off-shell decays, $H \rightarrow V^* V$ and $H \rightarrow V^* V^*$, where $V=\gamma,W^{\pm},Z^0$. For the off-shell decays the width of the decaying vector boson is properly included. The formulas are valid both for the Standard Model as well as for arbitrary extensions. As an example we study in detail the gauge-invariant effective Lagrangian models where we can have sizable enhancements over the Standard Model that could be observed at LEP.

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